<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>

    div{
        width:200px;
        height:200px;

        box-shadow:10px 20px 30px 40px gold;
    }
</style>
<body>
    
    <div></div>
</body>
</html>